Anti-fingerprint ceramic, manufacturing method of anti-fingerprint ceramic, switch panel and manufacturing method of switch panel

Abstract

The invention discloses anti-fingerprint ceramic and a manufacturing method thereof.The anti-fingerprint ceramic comprises a ceramic matrix, and the ceramic matrix comprises, by weight, 90-95 parts of zirconium oxide, 3-8 parts of yttrium oxide, 0.1-0.3 part of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide; the preparation method comprises the following steps: weighing zirconium oxide, yttrium oxide, calcium carbonate, aluminum oxide and silicon dioxide according to a formula, mixing, carrying out ball milling in absolute ethyl alcohol, and then sequentially carrying out drying, sieving and granulation treatment to obtain ceramic particles with the particle size of 30-80 microns; carrying out pressing treatment on the ceramic particles through a preset mold to obtain a ceramic green body; degreasing and sintering the ceramic green body to obtain a ceramic matrix; and obtaining the anti-fingerprint ceramic based on the ceramic matrix. The invention also provides a switch panel and a manufacturing method thereof. Through an optimized formula, the fingerprint-resistant ceramic keeps extremely high hardness, high fracture toughness and bending strength, and is far superior to glass and plastic.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ceramic materials, and particularly relates to an anti-fingerprint ceramic, a manufacturing method thereof, a switch panel and a manufacturing method thereof. BACKGROUND

[0002] As a functional component frequently used in home and office space, the material selection of the switch panel directly affects the use experience and safety performance, and largely determines the overall decoration style of the space. The main switch panel materials on the market are mainly divided into three categories: plastic (represented by PC material), metal and glass. However, these three types of materials all have obvious performance shortcomings, and it is difficult to meet the comprehensive needs of users for practicality, aesthetics and safety. The plastic panel is easy to scratch and age discolor, and the texture is poor; the metal panel is easy to leave fingerprints and has a limited style; the glass panel has aesthetics, but poor toughness and is easy to break, which poses a safety hazard. SUMMARY

[0003] The main purpose of the present application is to solve the technical problems as described in the background.

[0004] In the first aspect, in order to achieve the above-mentioned purpose, the present application provides an anti-fingerprint ceramic, comprising a ceramic base body, and the formula of the ceramic base body comprises the following raw materials in parts by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide.

[0005] Preferably, the anti-fingerprint ceramic further comprises an anti-fingerprint coating coated on the surface of the ceramic base body, and the formula of the anti-fingerprint coating comprises the following raw materials in parts by weight: 5-30 parts of a film-forming agent, 10-30 parts of a composite filler, 1-3 parts of an adhesion promoter and 50-65 parts of a solvent.

[0006] In the second aspect, the present application provides a manufacturing method of an anti-fingerprint ceramic, and the anti-fingerprint ceramic is as described in any one of the first aspect, comprising the following steps: The zirconium oxide, yttrium trioxide and calcium carbonate are weighed according to the formula and mixed, and then ball milled in anhydrous ethanol, followed by drying, sieving and granulation treatment, to obtain ceramic particles with a particle size of 30-80 μm; The ceramic particles are subjected to pressing treatment through a pre-set mold to obtain a ceramic green body; The ceramic green body is subjected to debinding and sintering treatment to obtain a ceramic base body; Based on the ceramic base body, an anti-fingerprint ceramic is obtained.

[0007] Preferably, the step of obtaining an anti-fingerprint ceramic based on the ceramic base body comprises: The film forming agent, the composite filler, the adhesion promoter and the solvent are weighed according to the formula, mixed to obtain an anti-fingerprint coating liquid, the anti-fingerprint coating liquid is uniformly coated on the surface of the ceramic matrix to form a wet film with a preset thickness, and the wet film is cured to obtain an anti-fingerprint ceramic.

[0008] Preferably, the step of pressing the ceramic particles through a preset mold to obtain a ceramic green body comprises: The ceramic particles are dry-pressed through a preset mold to form a first semi-finished product, and the pressure during dry-pressing is a first pressure, and the pressure holding time is a first pressure holding time. The first semi-finished product is taken out of the preset mold, vacuum packaged and then cold isostatic pressed to obtain a ceramic matrix, and the pressure during cold isostatic pressing is a second pressure, and the pressure holding time is a second pressure holding time.

[0009] Preferably, the step of debinding and sintering the ceramic green body to obtain a ceramic matrix comprises: The ceramic green body is heated from room temperature to a first temperature at a first rate, and maintained for a first time length to obtain a second semi-finished product. The second semi-finished product is heated to a second temperature at a second rate, and maintained for a second time length to obtain a third semi-finished product. The third semi-finished product is heated to a third temperature at a third rate, and maintained for a third time length to obtain a fourth semi-finished product. The fourth semi-finished product is heated to a fourth temperature at a fourth rate to obtain a fifth semi-finished product. The fifth semi-finished product is heated to a fifth temperature at a fifth rate, and maintained for a fourth time length to obtain a sixth semi-finished product. The sixth semi-finished product is cooled to a sixth temperature at a sixth rate, and then naturally cooled to room temperature to obtain a ceramic matrix.

[0010] Preferably, after the step of cooling the sixth semi-finished product to a sixth temperature at a sixth rate, and then naturally cooling to room temperature, the method further comprises: The ceramic matrix is turned over, heated from room temperature to a first temperature at a first rate, then heated to a seventh temperature at a fifth rate, maintained for a fifth time length, then cooled to a sixth temperature at a sixth rate, and then naturally cooled to room temperature, the seventh temperature is 20-30℃ lower than the fifth temperature, and the fifth time length is 1.5-2 times the fourth time length.

[0011] Preferably, the first rate is 2-3℃ / min, the first temperature is 200℃, the first time length is 60-120 minutes, the second rate is 0.5-1.5℃ / min, the second temperature is 350℃, the second time length is 90-120 minutes, the third rate is 1-2℃ / min, the third temperature is 600℃, the third time length is 60 minutes, the fourth rate is 4-8℃ / min, the fourth temperature is 1150℃, the fifth rate is 3-5℃ / min, the fifth temperature is 1450℃-1550℃, the fourth time length is 120-180 minutes, the sixth rate is 5-8℃ / min, and the sixth temperature is 800℃.

[0012] In a third aspect, the present application further provides a manufacturing method of a switch panel, which comprises: According to the preset switch panel mold, the ceramic base body manufactured by the manufacturing method of the anti-fingerprint ceramic according to any one of claims 2-8 is chamfered, and the anti-fingerprint ceramic manufactured according to the ceramic base body is a switch panel.

[0013] In a fourth aspect, the present application further provides a switch panel, which is manufactured by the manufacturing method of the switch panel according to the third aspect.

[0014] The present application uses zirconium oxide as the main raw material to manufacture ceramic, so that the anti-fingerprint effect can be achieved, and by setting an anti-fingerprint coating on the surface and combining with an optimized formula, the anti-fingerprint ceramic has extremely high hardness, high fracture toughness and bending strength, which is much better than glass and plastic. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 The figure is a flowchart of the manufacturing method of the ceramic in an embodiment of the present application; Figure 2 The figure is a flowchart of the manufacturing method of the ceramic in an embodiment of the present application; Figure 3 The figure is a flowchart of the manufacturing method of the ceramic in an embodiment of the present application; Figure 4 The figure is a flowchart of the manufacturing method of the ceramic in an embodiment of the present application; Figure 5A comparison of water droplet angle test results for ceramic without an anti-fingerprint coating (left) and with an anti-fingerprint coating (right) in an embodiment of the present application. DETAILED DESCRIPTION

[0017] In order to better understand the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0018] It should be understood that the specific embodiments described herein are merely exemplary for the purpose of explanation and are not intended to limit the present application.

[0019] It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the coordinate system shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0020] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0022] In a first aspect, to achieve the above object, the present application provides an anti-fingerprint ceramic, which comprises a ceramic base body, and a formula of the ceramic base body comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide, and 0.5-1.5 parts of silicon dioxide.

[0023] In the formula, the zirconium oxide is a nano zirconium oxide powder, the nano zirconium oxide (ZrO2) is tetragonal zirconia polycrystal (TZP), the purity is greater than or equal to 99.9% (high purity characteristics can avoid the interference of impurities on the coating combination), the primary particle size D50 is between 40-500 nanometers, and preferably D50 is less than or equal to 400 nanometers (the particle size range can ensure that the ceramic base body forms a dense and uniform microstructure, provides a flat and stable adhesion substrate for the anti-fingerprint coating, and reduces coating adhesion defects); the yttrium trioxide (Y2O3) is a stabilizer, the purity is greater than or equal to 99.9% (high purity can prevent impurities from affecting the interfacial bonding force of the coating and the base body), the particle size D50 is between 100-500 nanometers, and preferably D50 is less than 400 nanometers, and the main role is to stabilize the tetragonal zirconia structure, avoid the ceramic base body from cracking due to phase change in the cold and hot cycle, and maintain the durability of the anti-fingerprint effect; the calcium carbonate (CaCO3) is a sintering aid that can reduce the sintering temperature of the ceramic, promote the densification of the body, and reduce the generation of pores during the sintering process - a dense and pore-free ceramic base body can avoid the "permeation type failure" of the anti-fingerprint coating due to the presence of pores, and at the same time, the flat base body surface can allow the anti-fingerprint coating to spread uniformly, reduce the "anchor points" of fingerprint adhesion, and improve the coverage quality and wear resistance of the anti-fingerprint coating; the aluminum oxide (Al2O3) has dual functions of strengthening and toughening and structure regulation, on the one hand, it has high hardness and good chemical stability, can form a dense composite structure with tetragonal zirconia, significantly improve the mechanical properties of the ceramic base body at room temperature, including Vickers hardness and bending strength, and avoid the ceramic from cracking during processing or use; on the other hand, the aluminum oxide can refine the ceramic grains and inhibit the excessive growth of zirconia grains during sintering, ensuring the uniformity of the base body microstructure, allowing the anti-fingerprint coating to form a uniform adhesion layer on the surface, and avoiding the differences in anti-fingerprint effect caused by uneven roughness of the base body; the silicon dioxide (SiO2) mainly acts as an auxiliary sintering aid and thermal expansion coefficient regulator, and when it cooperates with the calcium carbonate, it can form a low melting point liquid phase during sintering, further reduce the sintering activation energy, promote the diffusion and combination between particles, and improve the density of the ceramic base body, providing a defect-free adhesion surface for the coating; at the same time, the silicon dioxide can effectively adjust the thermal expansion coefficient of the ceramic base body, making it more compatible with the thermal expansion performance of the subsequently coated anti-fingerprint coating, reducing the interfacial stress generated due to thermal mismatch during the cold and hot cycle, improving the bonding stability of the coating and the base body, and ensuring the stability and long-term effectiveness of the anti-fingerprint performance.

[0024] Preferably, the ceramic matrix further comprises a colorant 0-4.5 parts, for example, when the preset color is white, the colorant is 0; when the preset color is black, the colorant comprises 0.5-1.0 parts of cobalt oxide (CoO), 0.2-0.5 parts of iron oxide (Fe2O3), 0.1-0.3 parts of chromium oxide (Cr2O3) and 0.1-0.2 parts of manganese oxide (MnO2); when the preset color is purple (dream purple), the colorant comprises 2.0-4.0 parts (4.0 mol% is the best content for reference) of neodymium oxide (Nd2O3); when the preset color is pink (cherry pink), the colorant comprises 0.5-1.5 parts of erbium oxide (Er2O3), 0.1-0.5 parts of iron oxide (Fe2O3); when the preset color is yellow (lemon yellow), the colorant comprises 2.0-4.5 parts of cerium oxide (CeO2); when the preset color is brown (coffee brown), the colorant comprises 0.8-2 parts of iron oxide (Fe2O3), 0.3-0.6 parts of manganese oxide (MnO2) and 0.2-0.5 parts of cerium oxide (CeO2).

[0025] As an example, when making a white anti-fingerprint ceramic, take 95 parts of zirconium oxide powder, 3 parts of yttrium oxide (diyttrium trioxide), 0.2 parts of calcium carbonate, 1.8 parts of aluminum oxide, 0.5 parts of silicon dioxide; when making a black anti-fingerprint ceramic, take 95 parts of zirconium oxide powder, 3 parts of yttrium oxide, 0.2 parts of calcium carbonate, 0.9 parts of cobalt oxide, 0.35 parts of iron oxide, 0.15 parts of chromium oxide, 0.1 parts of manganese oxide, 1.8 parts of aluminum oxide, 0.5 parts of silicon dioxide; when making a purple anti-fingerprint ceramic, take 95 parts of zirconium oxide powder, 3 parts of yttrium oxide, 0.2 parts of calcium carbonate, 2.8 parts of neodymium oxide, 1.8 parts of aluminum oxide, 0.5 parts of silicon dioxide; when making a pink anti-fingerprint ceramic, take 95 parts of zirconium oxide powder, 3 parts of yttrium oxide, 0.2 parts of calcium carbonate, 1 parts of erbium oxide, 0.1 parts of iron oxide, 1.8 parts of aluminum oxide, 0.5 parts of silicon dioxide; when making a yellow anti-fingerprint ceramic, take 95 parts of zirconium oxide powder, 3 parts of yttrium oxide, 0.2 parts of calcium carbonate, 3 parts of cerium oxide, 1.8 parts of aluminum oxide, 0.5 parts of silicon dioxide; when making a brown anti-fingerprint ceramic, take 95 parts of zirconium oxide powder, 3 parts of yttrium oxide, 0.2 parts of calcium carbonate, 1.6 parts of iron oxide, 0.4 parts of manganese oxide, 0.3 parts of cerium oxide, 1.8 parts of aluminum oxide, 0.5 parts of silicon dioxide.

[0026] Preferably, the anti-fingerprint ceramic further comprises an anti-fingerprint coating coated on the surface of the ceramic matrix, the formula of the anti-fingerprint coating comprises the following raw materials by weight: film forming agent 5-30 parts, composite filler 10-30 parts, adhesion promoter 1-3 parts and solvent 50-65 parts.

[0027] Wherein the film forming agent is the film forming main body of the anti-fingerprint coating, including perfluoropolyether (PFPE) or long-chain fluorinated alkyl modified organosiloxane (such as fluorosilane), providing the main hydrophobic and oleophobic function; The composite filler includes nano-sized zirconium oxide powder (particle size 5-30 nm) or nano-sized silicon dioxide powder (particle size 20-200 nm) and a mixture of both in a specific ratio (the specific ratio is SiO2: ZrO2=3~4:1~1.5), it needs to be noted that the nano-sized zirconium oxide powder is preferably treated with yttrium oxide (Y2O3) to ensure that it remains stable in the tetragonal phase during heat treatment, the role of the composite filler is to improve the hardness and wear resistance of the coating, adjust the thermal expansion coefficient of the coating to be closer to the zirconia substrate, reduce the thermal mismatch stress, the nano particles can play a stress dispersion role, when the substrate undergoes local phase change, the flexible polymer matrix and dispersed nano particles can jointly absorb and buffer the interface stress; The adhesion promoter includes phosphate compounds dissolved or dispersed in a solvent, such as MDP, the phosphate group thereof can form stable chemical bonding with the Zr-OH on the surface of zirconia, the solvent includes low-boiling organic solvents (such as ethanol, butanone, isopropyl alcohol, acetone or fluorinated solvents) that dissolve or disperse the above components; In addition, the anti-fingerprint coating also includes an auxiliary agent, the auxiliary agent includes a dispersing agent and a leveling agent, etc., which are added according to actual needs.

[0028] For example, when the anti-fingerprint coating is a high-transparency and wear-resistant anti-fingerprint coating, the coating raw materials include 20-30 parts of a film-forming agent, 10-20 parts of a composite filler, 1-3 parts of an adhesion promoter, and 50-65 parts of a solvent. The film-forming agent includes a mixture of tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) at a mass ratio of 3:1, the composite filler includes nano-silica sol with a particle size of 20-100 nm, the adhesion promoter includes 3-aminopropyltriethoxysilane (APTES), and the solvent is a mixed solvent of ethanol and isopropanol at a volume ratio of 1:1. When the anti-fingerprint coating is a super-oil-repellent and jade-like anti-fingerprint coating, the coating raw materials include 10-15 parts of a film-forming agent, 20-30 parts of a composite filler, 1-2 parts of an adhesion promoter, and 55-65 parts of a solvent. The film-forming agent includes polydimethylsiloxane (PDMS) prepolymer, the composite filler includes nano-silica modified by fluoroalkyltriethoxysilane, and the particle size of the nano-silica is 200 nm, the adhesion promoter includes 3-glycidyloxypropyltrimethoxysilane (GPTMS), and the solvent includes a mixed solvent of ethanol and isopropanol. Optionally, additives such as a dispersant (e.g., polyether-modified silicone oil, BYK-180, etc., which can improve the stability of nano-filler in solution), a leveling agent (e.g., fluorine-modified polyacrylate leveling agent), a defoaming agent (e.g., polyether-modified siloxane defoaming agent), and a cross-linking promoter (e.g., tetrabutyl titanate or organic tin catalyst) can be further added to the above-mentioned 100 parts of coating raw material system. The addition of these additives does not significantly change the main chemical composition of the anti-fingerprint coating, but can significantly improve the construction stability, surface uniformity, and adhesion and durability of the anti-fingerprint layer.

[0029] In addition, the anti-fingerprint can also select different adhesion promoters according to the main components of the anti-fingerprint ceramic (such as the main component of the anti-fingerprint ceramic in this application is zirconia), so that it forms a stable chemical bond with the surface of the anti-fingerprint ceramic matrix. For example, for alumina ceramic (main component Al2O3), carboxylic acid or phosphonic acid promoters such as acrylic phosphonic acid ester (APA) or phosphonic acid-acrylic acid bifunctional silane are preferably used, which can form Al-O-P or Al-O-C bonds with Al-OH to improve the interfacial bonding strength; for magnesium oxide or cordierite ceramic (containing MgO, Mg2SiO4 components), β-diketone or carboxylate promoters (such as titanium acetylacetonate, carboxyl-modified silane) can be selected, which form stable complex bonds with surface Mg-OH or Mg-O-Si; for titanium oxide ceramic (TiO2-based), organic phosphonate or titanate promoters are preferably used, such as diisopropoxy titanium bis(acetylacetone) (TAA-iPr) or phosphonic acid propylene, which form Ti-O-P or Ti-O-C bonds with Ti-OH; for silica-based ceramic (SiO2, glass ceramic), organosilane promoters such as 3-glycidylpropyltrimethoxysilane (GPTMS) or 3-mercaptopropyltriethoxysilane (MPTES) can be used, which form Si-O-Si covalent bonds through siloxane condensation to ensure the integration of the coating and the substrate; for zirconia ceramic (ZrO2-based), as mentioned before, MDP, phosphonic acid acrylate (PAE) or phosphonic acid functionalized silane (Ph-Si-P) are preferred promoters, which can form stable Zr-O-P bonds with Zr-OH.

[0030] Specifically, after the film forming agent, the composite filler, the adhesion promoter and the solvent are mixed according to the above components, a uniform and stable coating liquid is formed by high-speed shearing or ball milling treatment, and then a precise spraying, dipping, spin coating or physical vapor deposition (PVD) method is used to uniformly coat the coating liquid on the surface of the (plasma) activated ceramic matrix to form a wet film, and the wet film is solidified to form a dry film. Through precise control of the coating process parameters (such as spraying flow, distance, speed, etc.), the thickness of the dry film is controlled within a certain range, and according to different application scenarios, the preferred dry film thickness is 200 nm to 10 μm. For example, for consumer electronics products that focus on optical performance and hand feeling, the film thickness is preferably controlled at 200-400 nm; for scenarios that require higher wear resistance, the film thickness can be controlled at 3-10 μm, and the mass production tolerance can be controlled within ±5 μm (for thicker coatings) or a more precise range in proportion.

[0031] In the present application, the ceramic is made by using zirconium oxide as the main raw material, and the ceramic matrix is improved in density and mechanical strength by using specific proportions, so that the fingerprint resistance effect is achieved, in addition, the fingerprint resistance effect is further improved by setting the fingerprint resistance coating on the surface of the ceramic and combining the optimized formula, as shown in Figure 5 The water drop angle test is performed on the fingerprint-resistant ceramic (left) (without fingerprint-resistant coating) and the fingerprint-resistant ceramic coated with fingerprint-resistant coating (right), and it can be obviously seen that the fingerprint-resistant performance of the right side in the figure is better, the principle is that the surface energy is the fundamental factor determining the wettability of the material, which reflects the thermodynamic driving force of the liquid spreading on the solid surface; according to the Young equation, when the contact angle θ < 90°, the solid surface shows hydrophilicity; when θ > 90°, it shows hydrophobicity; by precisely controlling the proportion of rare earth metal oxides as colorants, the ceramic made by the present application can present a variety of colors such as black, purple, pink, yellow, coffee, etc. which are consistent, color-saturated and stable, overcoming the defect of easy wear of surface coloring; it is the precise control of the particle size and content of the stabilizer and colorant that makes the colored ceramic panel still maintain high hardness (Vickers hardness > 12GPa), high fracture toughness (fracture toughness > 7MPa·m¹ / ²) and bending strength, which is much better than glass and plastic.

[0032] In the second aspect, referring to Figure 1 The present application provides a method for making fingerprint-resistant ceramic, comprising: S110, the zirconium oxide, yttrium trioxide, calcium carbonate, aluminum oxide and silicon dioxide are weighed according to the formula and mixed, ball milled in anhydrous ethanol, then sequentially dried, sieved and granulated to obtain ceramic particles with a particle size of 30-80μm; The nano zirconium oxide (ZrO2) is tetragonal zirconia polycrystal (TZP), the purity is greater than or equal to 99.9%, the primary particle size D50 is between 40-500 nanometers, and preferably D50 is less than or equal to 400 nanometers; the yttrium trioxide (Y2O3) is used as a stabilizer, the purity is greater than or equal to 99.9%, the particle size D50 is between 100-500 nanometers, and preferably D50 is less than 400 nanometers; the calcium carbonate (CaCO3) is used as a sintering aid; the anhydrous ethanol is used as a medium; for example, when the preset color is white, the component of the colorant is 0; when the preset color is black, the colorant includes 0.5-1.0 parts of cobalt oxide (CoO), 0.2-0.5 parts of iron oxide (Fe2O3), 0.1-0.3 parts of chromium oxide (Cr2O3), and 0.1-0.2 parts of manganese oxide (MnO2); when the preset color is purple (dream purple), the colorant includes 2.0-4.0 parts (referring to 4.0 mol% of the optimal content) of neodymium oxide (Nd2O3); when the preset color is pink (cherry pink), the colorant includes 0.5-1.5 parts of erbium oxide (Er2O3); when the preset color is yellow (lemon yellow), the colorant includes 2.0-4.5 parts of cerium oxide (CeO2); when the preset color is brown (coffee brown), the colorant includes 0.8-1.2 parts of iron oxide (Fe2O3), 0.3-0.6 parts of manganese oxide (MnO2), and 0.2-0.5 parts of cerium oxide (CeO2).

[0033] Specifically, the nano zirconium oxide powder, the yttrium trioxide powder, the calcium carbonate, and the corresponding colorant are placed in a planetary ball mill in proportion, zirconium oxide balls are used as a grinding medium, and anhydrous ethanol is used as a medium, and high-energy ball milling is performed for 2-6 hours (preset time) to ensure that the components are uniformly dispersed at the nanoscale. Then, drying, sieving, and granulation treatment are performed to obtain ceramic particles.

[0034] The granulation treatment includes placing the sieved powder in a granulator, spraying a 5%-10% concentration of PVA (polyvinyl alcohol) aqueous solution as an organic binder for spray granulation to obtain ceramic particles with good fluidity and uniform particle size distribution (30-80 μm). The addition amount of the organic binder PVA is usually 1%-2.5% of the total mass of the ceramic powder.

[0035] S120, the ceramic particles are subjected to pressing treatment through a preset mold to obtain a green ceramic body; Referring to Figure 3 , S120 specifically includes: S121, the ceramic particles are subjected to dry pressing treatment through a preset mold to obtain a first semi-finished product. The pressure during dry pressing is a first pressure, and the pressure holding time is a first pressure holding time. Exemplarily, the ceramic particles are filled into a preset mold for dry pressing to obtain a first semi-product, the pressure during the dry pressing is in a range of 100-120 MPa (first pressure), preferably the pressure is 110 MPa, and the pressure holding time is 1-3 seconds (first pressure holding time), preferably 2 seconds, to ensure that the ceramic is fully filled and compacted in the mold cavity to obtain a ceramic with an initial shape; S122, the first semi-product is taken out of the preset mold, vacuum packaged and then subjected to cold isostatic pressing to obtain a ceramic green body, the pressure during the cold isostatic pressing is a second pressure, and the pressure holding time is a second pressure holding time.

[0036] Exemplarily, the first semi-product after dry pressing is taken out of the preset mold, vacuum packaged and then subjected to cold isostatic pressing, the isostatic pressure is set to 130-200 MPa (second pressure), and the pressure holding time is 3-10 minutes (second pressure holding time), more preferably, the isostatic pressure is set to 200 MPa, and the pressure holding time is 3 minutes, which can significantly improve the density and uniformity of the green body, reduce sintering deformation, and effectively solve the "slicing" cracking problem caused by internal stress during subsequent CNC machining or cutting, and solve the internal density unevenness and stress concentration caused by dry pressing, especially for ceramic designs with thin walls, large sizes or complex surfaces.

[0037] S130, the ceramic green body is subjected to debinding and sintering treatment to obtain a ceramic matrix.

[0038] The process is to place the press-formed ceramic green body in a special sintering furnace, and use a precise multi-stage temperature rising curve for debinding and sintering, referring to Figure 4 The debinding and sintering treatment of the ceramic green body specifically includes: S131, the ceramic green body is heated from room temperature to a first temperature at a first rate, and kept for a first time length to obtain a second semi-product; This step is the dehydration and preheating stage, exemplarily, the ceramic green body is heated from room temperature to 200°C at a rate of 2-3°C / min, and kept for 60-120 minutes to remove the adsorbed water therein, to obtain a second semi-product.

[0039] S132, the second semi-product is heated to a second temperature at a second rate, and kept for a second time length to obtain a third semi-product; This step is the slow decomposition stage of the PVA binder, exemplarily, the second semi-product is heated to 350°C at a very slow rate of 0.5-1.5°C / min, and kept at this temperature point for 90-120 minutes, which is a key zone of PVA decomposition, and slow heating and keeping can help the organic gas to overflow smoothly, preventing the green body from cracking or bubbling.

[0040] S133, heating the third semi-product to a third temperature at a third rate for a third time duration to obtain a fourth semi-product; This step is the stage of removing residual organic matter. Exemplarily, the third semi-product is heated from 350℃ to 600℃ at a rate of 1-2℃ / min and kept for 60 minutes, to ensure that all organic binders are completely decomposed and removed.

[0041] S134, heating the fourth semi-product to a fourth temperature at a fourth rate to obtain a fifth semi-product; This step is the stage of pre-sintering and densification. Exemplarily, the fourth semi-product is heated from 600℃ to 1150℃ at a rate of 4-8℃ / min, and in this stage, the semi-product begins to shrink and densify.

[0042] S135, heating the fifth semi-product to a fifth temperature at a fifth rate for a fourth time duration to obtain a sixth semi-product; This step is the stage of high-temperature sintering. Exemplarily, the fifth semi-product is heated from 1150℃ to a final sintering temperature of 1450℃-1550℃ at a rate of 3-5℃ / min and kept at the peak temperature for 120-180 minutes, so that the ceramic grains in the semi-product grow sufficiently, the pores are completely removed, and the theoretical density is more than 99%.

[0043] S136, cooling the sixth semi-product to a sixth temperature at a sixth rate, and then naturally cooling to room temperature to obtain a ceramic substrate.

[0044] This step is the stage of controlled cooling. Exemplarily, the sixth semi-product is cooled from the sintering temperature to 800℃ at a rate of 5-8℃ / min, and then naturally cooled to room temperature with the furnace, to avoid product cracking caused by thermal stress due to rapid cooling.

[0045] To control the flatness of large-size panels to the extreme and eliminate micron-level sinking deformation caused by gravity, the present application creatively introduces a "re-sintering" or "two-step sintering with flipping" process, including flipping in single sintering, two-step sintering, and rotary sintering.

[0046] Flipping in single sintering is specifically replacing the S135 step with: S135, heating the fifth semi-product to a fifth temperature at a fifth rate for half of the fourth time duration, flipping the fifth semi-product by 180° and keeping it for the remaining half of the fifth time duration to obtain a sixth semi-product.

[0047] Exemplarily, the fifth semi-product is heated from 1150℃ to the final sintering temperature of 1450℃-1550℃ at a rate of 3-5℃ / min, and after the fourth time length of 60-90 minutes, the fifth semi-product is flipped by 180°, and the remaining time of 60-90 minutes is continued to be kept, to obtain a sixth semi-product.

[0048] When the semi-product deformed beyond the preset range (for example, the tolerance range >0.1mm) after the first sintering, the semi-product is sintered for the second time, and the second sintering is specifically after S136, including: S137, the ceramic matrix is flipped, heated from room temperature to a first temperature at a first rate, then heated to a seventh temperature at a fifth rate, kept for a fifth time length, then cooled to a sixth temperature at a sixth rate, and then naturally cooled to room temperature, the seventh temperature is 20-30℃ lower than the fifth temperature, and the fifth time length is 1.5-2 times of the fourth time length.

[0049] Exemplarily, the ceramic matrix is flipped, heated from room temperature to 200℃ at a rate of 2-3℃ / min, then heated to a seventh temperature (i.e. a temperature range about 20-30℃ lower than 1450℃-1550℃) at a rate of 3-5℃ / min, kept for a fifth time length (i.e. a time length of 1.5-2 times of 120-180 minutes), then cooled from the seventh temperature to 800℃ at a rate of 5-8℃ / min, and then naturally cooled to room temperature with the furnace.

[0050] For a circular or irregular ceramic, it can be placed on a slow rotating kiln that can set the rotating speed for rotating sintering. The rotating sintering is specifically replacing S135 with: The fifth semi-product is heated to a fifth temperature at a fifth rate, then rotated at a preset rotating speed, kept for a fourth time length, to obtain a sixth semi-product; Exemplarily, the fifth semi-product is heated from 1150℃ to the final sintering temperature of 1450℃-1550℃ at a rate of 3-5℃ / min, and rotated at an extremely low speed of 0.5-2 revolutions per minute (RPM) (referring to the concept of low rotating speed) for 120-180 minutes, to realize dynamic homogenization of the heat field and fundamentally inhibit deformation.

[0051] S140, based on the ceramic matrix, an anti-fingerprint ceramic is obtained.

[0052] Preferably, after the step of S130 of performing debinding and sintering treatment on the ceramic green body to obtain a ceramic matrix, further including: Performing post-treatment on the ceramic matrix.

[0053] The post-processing includes different post-processing paths according to the deformation of the semi-finished product / ceramic substrate after sintering and the final accuracy requirement, specifically: For the semi-finished product with a small deformation or using a re-sintering process, it is directly put into a drum polishing or vibration polishing to remove small surface defects and achieve a preliminary smoothness; for the semi-finished product with a large deformation, it is fixed on a five-axis CNC machining center, and a diamond tool is used to accurately mill the deformation allowance on the back and side surfaces according to the 3D scanning model to ensure the flatness and contour size; Then, a diamond grinding disc is used to plane grind the front and back surfaces of the semi-finished product to achieve a very high flatness (<0.02 mm) and thickness consistency; Subsequently, the ground semi-finished product is polished multiple times (including rough polishing, intermediate polishing, and final polishing in turn), and different particle sizes of diamond grinding liquid are used each time, and finally, nano-level polishing liquid is used to perform mirror polishing on a wool felt or polyurethane polishing pad, so that the surface roughness Ra≤0.05 μm, and a high-gloss or matte finish is presented.

[0054] Preferably, referring to Figure 2 , S140, based on the ceramic substrate, the step of obtaining the anti-fingerprint ceramic further includes: S140, the film-forming agent, the composite filler, the adhesion promoter, and the solvent are weighed according to the formula, mixed to obtain an anti-fingerprint coating liquid, the anti-fingerprint coating liquid is uniformly coated on the surface of the ceramic substrate to form a wet film with a predetermined thickness, and the wet film is cured to obtain an anti-fingerprint ceramic.

[0055] In the embodiment, the formula is as described in the first aspect. For example, when the anti-fingerprint coating is a high-transmittance wear-resistant anti-fingerprint coating, the manufacturing process includes: introducing TEOS (forming a continuous SiO2 network through hydrolysis and condensation to provide hardness and wear resistance) and MTES into the network to introduce methyl groups, reduce surface energy, and increase the hydrophobicity / oil repellency and flexibility of the network, thereby balancing anti-fouling without excessive brittleness. Add a solvent to obtain a mixed solution, add an appropriate amount of deionized water and a small amount of acetic acid to the mixed solution after uniform stirring, control the pH to be 4.5-5.5, and hydrolyze for 1 h; add nano-SiO2 sol to the mixed solution and continue stirring for 30 min to obtain a uniform sol; add APTES to the sol, stand for 2 h to obtain an anti-fingerprint coating liquid; the obtained coating liquid is uniformly applied to the surface of the anti-fingerprint (zirconia) ceramic surface activated by plasma in a spraying or spin coating manner, preheated at 80°C for 20 min, and then cured at 130°C for 40 min to complete the curing; When the anti-fingerprint coating is a super-oleophobic diatomite anti-fingerprint coating, the manufacturing process comprises: adding a PDMS prepolymer into a solvent, stirring uniformly to obtain a mixed solution; adding surface-fluorine-modified nano-SiO2 powder into the mixed solution, using ultrasonic dispersion for 30 min to form a stable suspension; adding GPTMS into the suspension, stirring uniformly, and then standing and curing for 1 h to obtain an anti-fingerprint coating solution; using a spraying method to coat the solution on the surface of a plasma-activated ceramic base; and curing at 100 ℃ for 30 min to form a dense and transparent coating.

[0056] The silane coupling agent such as APTES / GPTMS plays a role in chemical bonding and interface coupling between the inorganic network, nano-filler and organic polymer (such as PDMS), and significantly improves the adhesion and durability of the coating and the ceramic base.

[0057] The step of curing the wet film can further comprise: a low-temperature pre-drying stage: keeping at a temperature of 40-80 ℃ for 20-40 min, so as to slowly remove most of the solvent and avoid defects such as pinholes or orange peel caused by too fast evaporation of the solvent; a programmed temperature rising stage: slowly rising to a final curing temperature at a rate of 5-15 ℃ / min and keeping at a temperature of 80-120 ℃ for 10-60 min, which helps to release the internal stress of the coating; a high-temperature constant-temperature curing stage (an optional stage): keeping at a temperature of 120-160 ℃ for 30-60 min, in which stage, the main body of the film forms a dense network structure through cross-linking reaction, and the adhesion promoter fully reacts with the surface of the base to form a chemical bond, so that the coating is densified at high temperature.

[0058] a programmed temperature falling stage: slowly cooling to room temperature at a controlled rate (such as 10 ℃ / min), so as to avoid cracking of the coating or reduction of the bonding force with the base caused by thermal shock stress due to fast cooling.

[0059] In the present aspect, by accurately controlling the proportion of rare earth metal oxides and the like as colorants, the ceramic produced by the present application can present a variety of colors such as black, purple, pink, yellow and coffee that are consistent, color-saturated and stable throughout the body, overcoming the shortcoming of easy wear of surface coloring; through the optimized formula, especially the accurate control of the particle size and content of the stabilizer and colorant, the colored ceramic panel still maintains a very high hardness (Vickers hardness > 12 GPa), high fracture toughness (fracture toughness > 7 MPa·m¹ / ²) and bending strength, which is much better than glass and plastic; the "dry pressing + isostatic pressing" combined pressing process and the precise sintering / return sintering / turning process effectively inhibit the warping deformation in the sintering process, control the flatness of the panel within a very small range, greatly reduce the subsequent expensive CNC orthopedic process, significantly reduce the cost and improve the yield.

[0060] In a third aspect, the present application further provides a manufacturing method of a switch panel, which comprises: According to the preset switch panel mold, the ceramic base body manufactured by the manufacturing method of the anti-fingerprint ceramic according to any one of claims 2-8 is chamfered, and the anti-fingerprint ceramic manufactured based on the ceramic base body is a switch panel.

[0061] In the third aspect, the switch panel is manufactured by the manufacturing method of the anti-fingerprint ceramic according to any one of the second aspect, and in the case where the preset mold is plate-shaped, the ceramic base body can be cut, drilled and chamfered according to the preset switch panel mold, and then the switch panel is obtained based on the ceramic base body (the main step is coating a coating layer), or the preset mold in S120 can be replaced by the preset switch panel mold, and the step of S140 is after the step in the third aspect, so that the switch panel surface has good anti-fingerprint performance, and specifically: The zirconium oxide, yttrium trioxide, calcium carbonate, aluminum oxide and silicon dioxide are weighed according to the formula and mixed, ball milled in anhydrous ethanol, and then sequentially subjected to drying, sieving and granulation treatment to obtain ceramic particles with a particle size of 30-80 μm; The ceramic particles are subjected to pressing treatment through the preset switch mold to obtain a ceramic green body; The ceramic green body is subjected to debinding and sintering treatment to obtain a ceramic base body; The ceramic base body is chamfered according to the preset switch panel mold, and then the switch panel is obtained based on the ceramic base body.

[0062] The step of obtaining the switch panel based on the ceramic base body comprises weighing a film-forming agent, a composite filler, an adhesion promoter and a solvent according to a formula, mixing to obtain an anti-fingerprint coating liquid, uniformly coating the anti-fingerprint coating liquid on the surface of the ceramic base body to form a wet film with a preset thickness, and curing the wet film to obtain the switch panel.

[0063] According to the preset switch panel mold, the ceramic base body manufactured by the manufacturing method of the anti-fingerprint ceramic according to any one of claims 2-8 is chamfered, and the anti-fingerprint ceramic manufactured based on the ceramic base body is a switch panel. Diamond wire cutting: using a diamond wire with a diameter of 0.3-0.35 mm for cutting, the cutting seam is small, the material loss is low, and the edge quality is good.

[0064] Laser cutting: cutting with picosecond or femtosecond laser. Although the equipment cost is high (about 3 times of that of line cutting), it has the advantages of non-contact processing, no mechanical stress, can effectively avoid the cracking of ceramic parts; fast cutting speed, high size control precision, and small edge collapse, which can greatly reduce the subsequent grinding time.

[0065] In the present aspect, through the precise chamfering treatment (corresponding treatment in multiple cases) of the ceramic base / anti-fingerprint ceramic, efficient and high-precision processing of high-hardness zirconia ceramic is realized, the finished product has smooth edges, no ceramic collapse, the chamfer is round, and the overall aesthetic effect and texture are greatly improved; at the same time, a whole-process and parameterized manufacturing method from powder formula to final product has high operability and stability, and lays a technical foundation for large-scale and high-quality production of multi-color zirconia ceramic switch panels.

[0066] In a fourth aspect, the present application further provides a switch panel, which is made by the manufacturing method of the switch panel in the third aspect.

[0067] The switch panel is as described in any one of the third aspects, which will not be repeated here.

[0068] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An anti-fingerprint ceramic, characterized by, The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide.

2. The anti-fingerprint ceramic according to claim 1, wherein, The anti-fingerprint ceramic further comprises an anti-fingerprint coating layer coated on the surface of the ceramic base, and a formula of the anti-fingerprint coating layer comprises the following raw materials by weight: 5-30 parts of a film forming agent, 10-30 parts of a composite filler, 1-3 parts of an adhesion promoter and 50-65 parts of a solvent.

3. A method of making an anti-fingerprint ceramic according to claim 1 or 2, characterized in that, The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide.

4. The method of claim 3, wherein the ceramic is an anti-fingerprint ceramic. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide.

5. The method of claim 3, wherein the ceramic is an anti-fingerprint ceramic. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide.

6. The method of claim 3, wherein the ceramic is an anti-fingerprint ceramic. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide.

7. The method of claim 6, wherein the ceramic is anti-fingerprint. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of calcium carbonate, 1-3 parts of aluminum oxide and 0.5-1.5 parts of silicon dioxide. The anti-fingerprint ceramic comprises a ceramic base, and a formula of the ceramic base comprises the following raw materials by weight: 90-95 parts of zirconium oxide, 3-8 parts of yttrium trioxide, 0.1-0.3 parts of The ceramic base is flipped over, heated from room temperature to a first temperature at a first rate, then heated to a seventh temperature at a fifth rate, held for a fifth time length, then cooled to a sixth temperature at a sixth rate, and then naturally cooled to room temperature, the seventh temperature being 20-30℃ lower than the fifth temperature, the fifth time length being 1.5-2 times the fourth time length.

8. The method of claim 6, wherein the ceramic is anti-fingerprint. The first rate is 2-3℃ / min, the first temperature is 200℃, the first time length is 60-120 minutes, the second rate is 0.5-1.5℃ / min, the second temperature is 350℃, the second time length is 90-120 minutes, the third rate is 1-2℃ / min, the third temperature is 600℃, the third time length is 60 minutes, the fourth rate is 4-8℃ / min, the fourth temperature is 1150℃, the fifth rate is 3-5℃ / min, the fifth temperature is 1450℃-1550℃, the fourth time length is 120-180 minutes, the sixth rate is 5-8℃ / min, and the sixth temperature is 800℃.

9. A method of manufacturing a switch panel, characterized by: The method for manufacturing the switch panel comprises: According to a preset switch panel mold, the ceramic base prepared by the method for manufacturing the anti-fingerprint ceramic according to any one of claims 2-8 is chamfered, and the anti-fingerprint ceramic prepared according to the ceramic base is the switch panel.

10. A switch panel, characterized in that The switch panel is manufactured by the method for manufacturing the switch panel according to claim 9.

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